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1.
Curr Osteoporos Rep ; 22(1): 11-27, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38198033

RESUMO

PURPOSE OF REVIEW: The purpose of this review is to highlight the evidence of microvascular dysfunction in bone and marrow and its relation to poor skeletal outcomes in diabetes mellitus. RECENT FINDINGS: Diabetes mellitus is characterized by chronic hyperglycemia, which may lead to microangiopathy and macroangiopathy. Micro- and macroangiopathy have been diagnosed in Type 1 and Type 2 diabetes, coinciding with osteopenia, osteoporosis, enhanced fracture risk and delayed fracture healing. Microangiopathy has been reported in the skeleton, correlating with reduced blood flow and perfusion, vasomotor dysfunction, microvascular rarefaction, reduced angiogenic capabilities, and augmented vascular permeability. Microangiopathy within the skeleton may be detrimental to bone and manifest as, among other clinical abnormalities, reduced mass, enhanced fracture risk, and delayed fracture healing. More investigations are required to elucidate the various mechanisms by which diabetic microvascular dysfunction impacts the skeleton.


Assuntos
Diabetes Mellitus Tipo 2 , Fraturas Ósseas , Humanos , Diabetes Mellitus Tipo 2/complicações , Medula Óssea/irrigação sanguínea , Osso e Ossos , Microvasos
2.
Artigo em Inglês | MEDLINE | ID: mdl-36964458

RESUMO

The unique needs of first-generation immigrants and their families have not been prioritized in mental healthcare. Cultural tailoring of child services requires valid, reliable, and efficient assessments of family cultural identity. The Abbreviated Multidimension Acculturation Scale (AMAS) is a self-report of acculturation and enculturation that has been evaluated in community, but not clinical, samples. We offer the first AMAS psychometric evaluation in a treatment-seeking sample of first-generation immigrant caregivers presenting for children's mental healthcare (N = 219). Analyses examined the internal consistency, concurrent validity, and factor structures of the long-form AMAS (42 items, six subscales), AMAS-10 (10 items, four subscales), and AMAS-14 (14 items, six subscales). Findings provide support for the AMAS-10 and AMAS-14, but not the full-length AMAS, in the present sample. Given urgent needs for culturally responsive care for first-generation populations, the AMAS-10 and AMAS-14 can be used in clinical settings to support cultural assessment, case conceptualization, and treatment planning.

3.
Cogn Behav Pract ; 2023 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-37363367

RESUMO

The COVID-19 pandemic accelerated a widespread shift to telehealth among mental health professionals to prioritize both providers' and clients' safety. Telehealth is likely here to stay; however, there is limited practical guidance for clinicians about how to make decisions regarding who should proceed with care via telehealth versus in-person. There also is virtually no data on the effectiveness of hybrid approaches to care; yet this can be an attractive option with potential clinical benefit. This paper provides practice-informed guidance to support shared clinical decision-making between clinicians and families to decide whether to engage in therapy services in-person or via telehealth. We specifically focus on decision-making guidance relevant for youth with anxiety or related disorders, given the unique implications of telehealth for these youth. Guided by the three-legged stool of evidence-based practice, we discuss how clinicians can use principles of shared decision-making to inform clinical recommendations about treatment modality.

4.
Environ Res ; 212(Pt C): 113369, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35508220

RESUMO

Microplastics (MPs) are characterized by their high persistence in marine ecosystems, and due to their small size, they can be easily ingested by very diverse organisms. Although the presence of MPs in wild fish is well documented, there is still limited information on their potential to induce adverse effects. Pelagic fish species, because of their wide distribution, are considered good bioindicators for monitoring environmental pollution of marine ecosystems. This study investigated the presence of MPs in the gastrointestinal tract of the predatory pelagic fish (Seriola dumerili) in the Balearic Islands (Mediterranean Sea), and the possible relationship with oxidative stress through the analysis of biomarkers in liver tissue. The results showed the presence of MPs in 98% of total samples examined (n = 52) with an average of 12.2 ± 1.3 MPs/individual. A greater amount of fibre-like particles was isolated compared to fragments. No correlation between the presence of MPs in the gastrointestinal contents and the size of the fishes was noted. Antioxidant enzymes (superoxide dismutase and catalase) and the phase II detoxification enzyme glutathione-S-transferase showed increased activities in fish with higher MPs load. The activity ethoxyresorufin-O-deethylase and the levels of malondialdehyde were similar in both groups. In conclusion, the present results provide an important database on the assessment of the presence of MP debris in S. dumerili gastrointestinal tract and, the potential capability to cause oxidative stress.


Assuntos
Perciformes , Poluentes Químicos da Água , Animais , Ecossistema , Biomarcadores Ambientais , Monitoramento Ambiental/métodos , Peixes , Fígado/química , Microplásticos , Estresse Oxidativo , Plásticos/análise , Espanha , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/toxicidade
5.
J Clin Child Adolesc Psychol ; 51(1): 1-22, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34905434

RESUMO

OBJECTIVE: Disparities in child mental health service engagement suggest traditional evidence-based practices do not properly consider cultural and contextual factors relevant for marginalized families. We propose a person-centered approach to improve the cultural responsiveness of services. Preliminary research supports broadening standard assessments to include a person-centered evaluation of patient cultural factors, however, controlled studies have not been conducted in the context of children's mental health care. METHODS: Participants included families (N = 89; 89% racial/ethnic minority) receiving services for child externalizing problems. Prior to intake, caregivers were randomized to receive either Assessment as Usual (AAU) or AAU augmented with the Cultural Formulation Interview (CFI+AAU), a brief caregiver assessment of cultural factors affecting their child's problems and family help-seeking. RESULTS: Implementation data showed strong provider fidelity and clinical utility. Following assessments, CFI+AAU caregivers (relative to AAU caregivers) reported feeling better understood by their provider, and providers reported better understanding CFI+AAU families' values. Caregiver satisfaction was rated highly overall, yet providers reported being more satisfied with the assessment when the CFI was incorporated. Engagement outcomes found CFI+AAU families were significantly more likely than AAU families to subsequently complete the first phase of treatment. Further, among families receiving services in Spanish, CFI+AAU, relative to AAU, was associated with significantly higher treatment attendance, homework completion, and treatment response. CONCLUSIONS: The results underscore the utility of incorporating a brief cultural assessment in pretreatment assessments. To improve the cultural responsiveness of services, efforts may do well to promote the uptake of person-centered approaches such as cultural assessment into usual care. Registered at clinicaltrials.gov (NCT03499600).


Assuntos
Etnicidade , Serviços de Saúde Mental , Cuidadores , Criança , Minorias Étnicas e Raciais , Família , Humanos , Grupos Minoritários
6.
Int J Mol Sci ; 23(16)2022 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-36012278

RESUMO

Pollution in the seas and oceans is a global problem, which highlights emerging pollutants and plastics, specifically microplastics (MPs), which are tiny (1 µm to 5 mm) ubiquitous plastic particles present in marine environments that can be ingested by a wide range of organisms. Holothurians are benthic organisms that feed on sediment; therefore, they can be exposed to contaminants present in the particles they ingest. The objective was to evaluate the effects of human activity on Holothuria tubulosa through the study of biomarkers. Specimens were collected in three different areas throughout the island of Eivissa, Spain: (1) a highly urbanized area, with tourist uses and a marina; (2) an urbanized area close to the mouth of a torrent; (3) an area devoid of human activity and considered clean. The results showed a higher presence of microplastics (MPs) in the sediments from the highly urbanized area in relation to the other two areas studied. Similarly, a higher number of MPs were observed in the digestive tract of H. tubulosa from the most affected area, decreasing with the degree of anthropic influence. Both in the sediment and in the holothurians, fibers predominated with more than 75% of the items. In the three areas, mesoplastics were analyzed by means of FTIR, showing that the main polymer was polypropylene (27%) followed by low-density polyethylene (17%) and polystyrene (16%). Regarding the biomarkers of oxidative stress, the intestine of H. tubulosa from the most impacted areas showed higher catalase, superoxide dismutase (SOD), glutathione reductase (GRd), and glutathione S-transferase (GST) activities and reduced glutathione (GSH) levels compared to the control area. The intermediate area only presented significant differences in GRd and GST with respect to the clean area. The activities of acetylcholinesterase and the levels and malondialdehyde presented similar values in all areas. In conclusion, human activity evaluated with the presence of MPs induced an antioxidant response in H. tubulosa, although without evidence of oxidative damage or neurotoxicity. H. tubulosa, due to its benthic animal characteristics and easy handling, can be a useful species for monitoring purposes.


Assuntos
Holothuria , Poluentes Químicos da Água , Acetilcolinesterase , Animais , Biomarcadores/metabolismo , Monitoramento Ambiental , Glutationa Redutase , Atividades Humanas , Humanos , Intestinos/química , Microplásticos/toxicidade , Estresse Oxidativo , Plásticos , Poluentes Químicos da Água/análise
7.
Infant Ment Health J ; 42(4): 573-585, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33961711

RESUMO

INTRODUCTION: Research on families of young children with developmental delay and disruptive behavior problems has failed to examine caregiver stress in the context of cultural factors. METHODS: Families of 3-year-old children with developmental delay and behavior problems were recruited from Early Intervention sites. All caregivers in the current analysis (n = 147) were from immigrant and/or cultural minority backgrounds. Regarding income-to-needs, most families (57.8%) fell into the extreme poverty, poor, or low-income categories. Caregivers reported on their own experiences of acculturation and enculturation as well as their child's problems. RESULTS: Path analyses revealed that higher caregiver acculturation was associated with less parenting-specific stress, and higher caregiver enculturation was associated with less caregiver general stress. Severity of child problems was associated with more parenting-specific stress and general stress. Exploratory analysis yielded significant differences in associations between acculturation, enculturation, and caregiver stress in Black/African American caregivers versus Hispanic White caregivers. CONCLUSION: Findings suggest that among cultural minority caregivers of young children with developmental and behavioral problems, acculturation and enculturation may influence caregiver stress. While the cross-sectional nature of the study precludes causal conclusions, clinicians should consider how cultural factors can be harnessed to strengthen caregiver resiliency and improve engagement in parenting interventions.


Assuntos
Cuidadores , Comportamento Problema , Pré-Escolar , Estudos Transversais , Humanos , Poder Familiar , Identificação Social
8.
Child Psychiatry Hum Dev ; 50(6): 940-949, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31087216

RESUMO

Youth anxiety disorders are highly prevalent and are associated with considerable school impairment. Despite the identification of well-supported strategies for treating youth anxiety, research has yet to evaluate the differential effects of these treatments on anxiety-related school impairment. The present study leveraged data from the Child/Adolescent Anxiety Multimodal Study to examine differential treatment effects of CBT, sertraline, and their combination (COMB), relative to placebo (PBO), on anxiety-related school impairment among youth (N = 488). Latent growth modeling revealed that all three active treatments demonstrated superiority over PBO in reducing anxiety-related school impairment over time, with COMB showing the most robust effects. According to parent report, medication strategies may have stronger effects on anxiety-related school impairment among males than among females. Results were discrepant across parents and youth. Findings are discussed in terms of clinical implications for anxious youth and the need for continued research to examine treatment effects on anxiety-related school impairment.


Assuntos
Desempenho Acadêmico , Transtornos de Ansiedade/terapia , Terapia Cognitivo-Comportamental/métodos , Avaliação de Resultados em Cuidados de Saúde , Inibidores Seletivos de Recaptação de Serotonina/farmacologia , Sertralina/farmacologia , Adolescente , Transtornos de Ansiedade/tratamento farmacológico , Criança , Estudos Clínicos como Assunto , Terapia Combinada , Feminino , Humanos , Masculino , Pais , Medidas de Resultados Relatados pelo Paciente , Instituições Acadêmicas , Adulto Jovem
9.
Depress Anxiety ; 34(9): 786-793, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28661053

RESUMO

BACKGROUND: Social networking services (SNS) have rapidly become a central platform for adolescents' social interactions and media consumption patterns. The present study examined a representative sample of publicly accessible content related to deliberate self-injurious cutting across three SNS platforms: Twitter, Tumblr, and Instagram. METHODS: Data collection simulated searches for publicly available deliberate self-injury content on Twitter, Tumblr, and Instagram. Over a six-month period at randomly generated time points, data were obtained by searching "#cutting" on each SNS platform and collecting the first 10 posts generated. Independent evaluators coded posts for presence of the following: (a) graphic content, (b) negative self-evaluations, (c) references to mental health terms, (d) discouragement of deliberate self-injury, and (e) recovery-oriented resources. Differences across platforms were examined. RESULTS: Data collection yielded a sample of 1,155 public posts (770 of which were related to mental health). Roughly 60% of sampled posts depicted graphic content, almost half included negative self-evaluations, only 9.5% discouraged self-injury, and <1% included formal recovery resources. Instagram posts displayed the greatest proportion of graphic content and negative self-evaluations, whereas Twitter exhibited the smallest proportion of each. CONCLUSIONS: Findings characterize the graphic nature of online SNS deliberate self-injury content and the relative absence of SNS-posted resources for populations seeking out deliberate self-injurious cutting content. Mental health professionals must recognize the rapidly changing landscape of adolescent media consumption, influences, and social interaction as they may pertain to self-harm patterns.


Assuntos
Comportamento Autodestrutivo , Mídias Sociais , Rede Social , Humanos , Mídias Sociais/estatística & dados numéricos
10.
Dev Psychobiol ; 59(4): 543-550, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28261792

RESUMO

Parasympathetic nervous system influences on cardiac functions-commonly indexed via respiratory sinus arrhythmia (RSA)-are central to self-regulation. RSA suppression during challenging emotional and cognitive tasks is often associated with better emotional and behavioral functioning in preschoolers. However, the links between RSA suppression and child behavior across various challenging interpersonal contexts remains unclear. The present study experimentally evaluated the relationship between child RSA reactivity to adult (mother vs. study staff) direction and disruptive behavior problems in children ages 3-8 with varying levels of disruptive behavior problems (N = 43). Reduced RSA suppression in the context of mothers' play-based direction was associated with more severe child behavior problems. In contrast, RSA suppression in the context of staff play-based direction was not associated with behavior problems. Findings suggest that the association between RSA suppression and child behavior problems may vary by social context (i.e., mother vs. other adult direction-givers). Findings are discussed in regard to RSA as an indicator of autonomic self-regulation that has relevance to child disruptive behavior problems.


Assuntos
Transtornos do Comportamento Infantil/fisiopatologia , Comportamento Infantil/fisiologia , Relações Interpessoais , Relações Mãe-Filho , Sistema Nervoso Parassimpático/fisiopatologia , Comportamento Problema , Arritmia Sinusal Respiratória/fisiologia , Criança , Pré-Escolar , Feminino , Humanos , Masculino
11.
Child Psychiatry Hum Dev ; 46(5): 693-701, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25300193

RESUMO

Asian American adults endorse more symptoms of social anxiety (SA) on self-report measures than European Americans, but demonstrate lower prevalence rates of SA disorder in epidemiological studies. These divergent results create ambiguity concerning the mental health needs of Asian Americans. The present study is the first to investigate this issue in adolescents through assessment of self-reported SA in Asian American high school students. Parent and self-ratings of impairment related to SA and self-reported mental health service use for SA were also measured. Asian American students endorsed a greater number of SA symptoms and scored in the clinical range more frequently than other ethnic groups. Also, Asian American and Latino students endorsed more school impairment related to SA than other ethnic groups. No differences in parent-reported impairment or service utilization were identified. Implications for future research and treatment for SA among Asian American adolescents are discussed.


Assuntos
Ansiedade/etnologia , Asiático/psicologia , Negro ou Afro-Americano/psicologia , Hispânico ou Latino/psicologia , Serviços de Saúde Mental/estatística & dados numéricos , Transtornos Fóbicos/etnologia , Estudantes/psicologia , População Branca/psicologia , Adolescente , Feminino , Humanos , Masculino , Programas de Rastreamento , Saúde Mental/etnologia , Instituições Acadêmicas , Autorrelato , Adulto Jovem
12.
J Consult Clin Psychol ; 92(6): 344-355, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38619454

RESUMO

OBJECTIVE: Despite effective treatment options, many families-especially those from marginalized backgrounds-lack access to quality care for their children's behavioral difficulties. Since the COVID-19 pandemic, telehealth has become a prominent format for the delivery of outpatient services, with potential to increase access to quality care. Although telehealth-delivered parenting interventions are associated with positive clinical outcomes, limited research has examined whether telehealth formats improve treatment engagement relative to office-based care. The present study is the first controlled comparison of engagement across office-based parent-child interaction therapy (PCIT) and internet-delivered PCIT (iPCIT). METHOD: Children ages 3-5 years, and their caregiver(s) (N = 40) participated in a randomized trial comparing iPCIT to office-based PCIT in the treatment of behavioral problems. Analyses examined the effects of treatment format on engagement (i.e., missed sessions, premature treatment discontinuation, homework completion, therapeutic alliance, and treatment satisfaction). Logistic and linear regressions further explored whether treatment format moderated the effects of common predictors of treatment engagement (i.e., family economic means, racial/ethnic background, caregiver stress). RESULTS: iPCIT improved attendance rates relative to office-based PCIT, especially for families from minoritized racial/ethnic backgrounds. At the same time, among families with relatively higher levels of caregiver stress, office-based PCIT was associated with lower dropout rates and improved treatment alliance and satisfaction, relative to iPCIT. CONCLUSIONS: This study provides the first experimental support that telehealth formats can improve treatment attendance in behavioral parenting interventions. Findings highlight nuances in treatment engagement across treatment formats that reveal limits to the extent telehealth transcends engagement concerns. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Poder Familiar , Telemedicina , Humanos , Masculino , Feminino , Pré-Escolar , Poder Familiar/psicologia , Adulto , Relações Pais-Filho , Terapia Comportamental/métodos , Transtornos do Comportamento Infantil/terapia , COVID-19 , Terapia Familiar/métodos
13.
Implement Sci Commun ; 5(1): 77, 2024 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-39020427

RESUMO

BACKGROUND: Most implementation science resources (e.g., taxonomies) are published in English. Linguistic inaccessibility creates a barrier to the conduct of implementation research among non-English-speaking populations, so translation of resources is needed. Translation into Spanish can facilitate widespread reach, given the large proportion of Spanish speakers around the world. This research aimed to systematically translate the Expert Recommendations for Implementation Change (ERIC) compilation into Spanish as an exemplar for the linguistic translation process. METHODS: Using the World Health Organization guidelines, this work translated the ERIC compilation strategy names, short definitions, and thematic clusters through a three-step process: 1) forward translation into Spanish by a native Spanish-speaking implementation scientist, 2) back-translation into English by a bilingual global health researcher, and 3) piloting via virtual focus group discussions with bilingual researchers not conducting implementation research. To achieve a generalizable translation, recruitment targeted a multicultural group of Spanish-speaking researchers. At the conclusion of each step, the transdisciplinary research team (N = 7) met to discuss discrepancies and refine translations. The Spanish version of the ERIC compilation was finalized through group consensus. Reflections from research team meetings and focus group discussions were synthesized qualitatively. RESULTS: Given that dialectical nuances exist between Spanish-speaking regions, efforts prioritized universally accepted terminology. Team discussions focused on difficult translations, word choice, and clarity of concepts. Seven researchers participated in two focus groups, where discussion surrounded clarity of concepts, alternative word choice for Spanish translations, linguistic formality, grammar, and conciseness. Translation difficulties highlighted lack of precision in implementation science terminology, and the lack of conceptual clarity of words underscored limitations in the application of the compilation. CONCLUSIONS: The work demonstrated the feasibility of translating implementation science resources. As one of the first systematic efforts to translate implementation resources, this study can serve as a model for additional efforts, including translation into other languages and the expansion to conceptual modifications. Further, this work yielded insights into the need to provide conceptual clarity in implementation science terminology. Importantly, the development of Spanish resources will increase access to conduct implementation research among Spanish-speaking populations.

14.
Sci Total Environ ; 951: 175848, 2024 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-39209167

RESUMO

Climate change associated with human activities alters marine ecosystems and causes imbalances and abrupt changes in sea conditions. Scarce freshwater resources for human consumption often prompt the construction of desalination plants, which discharge significant amounts of brine into the sea, potentially elevating salinity levels. Furthermore, global trade together with higher temperature and pollution can facilitate the spread of parasites. The aim of this study was to assess the potential effects of salinity, an abiotic stressor, and Scaphanocephalus sp. parasitic infection responsible for black spot disease, a biotic stressor, on Coris julis, a common fish in the Balearic Islands (Spain). Fish were sampled from an area affected by a desalination plant, one with a high rate of parasite infection and a control area, and biomarkers were analysed in the liver, gills and epithelial mucosa. Both salinity and the parasite induced increases in catalase (CAT) and glutathione s-transferase activities in the liver, while superoxide dismutase (SOD) did not show significant changes. The effects of salinity were evident to a greater extent in the gills with an increase in the activity of all enzymes, as well as in the production of reactive species. The effects of the parasite were mainly observed in the mucus with significant increases in CAT and SOD activities. Regarding immune response markers in the mucus, both stressors induced an increase in lysozyme and alkaline phosphatase activities, and in the case of the parasite, also an increase in immunoglobulins. Malondialdehyde, as an indicator of oxidative damage, remained unchanged. In conclusion, both abiotic and abiotic stress induce a stress situation in C. julis that responds by activating its antioxidant and immune defence mechanisms but does cause oxidative damage. The differential tissue response to different stressors highlights the value of analysing multiple tissues to detect early indicators of diverse impacts on marine fauna.


Assuntos
Antioxidantes , Salinidade , Espanha , Animais , Antioxidantes/metabolismo , Doenças dos Peixes/parasitologia , Sistema Imunitário , Brânquias/parasitologia , Monitoramento Ambiental
15.
Psychiatr Serv ; 74(9): 987-990, 2023 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-36872893

RESUMO

This Open Forum explores how implementation research and practice may sustain White supremacist ideas, perpetuate unequal power dynamics, and maintain mental health care inequities. The following questions were considered: What information is valued and considered evidence? and How do power differentials within implementation research and practice manifest? The implementation of evidence-based interventions within community mental health clinics is used as an example to explore these questions. Recommendations are provided to envision a future that centers collaboratively developed and community-led approaches to foster equity in mental health care.


Assuntos
Saúde Mental , Racismo , Humanos , População Branca
16.
Child Youth Care Forum ; : 1-18, 2023 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-36711198

RESUMO

Background: Exposure therapy ("exposure") for youth anxiety is highly underutilized in clinical practice. Asynchronous, online implementation strategies such as online toolkits hold promise as pragmatic approaches for extending the sustainability of evidence-based interventions, but their long-term usage, perceived utility, and impact are rarely studied. Objective: This study presents three-year preliminary implementation outcomes for a free, online toolkit to support exposure therapy use with youth: the Resource for Exposure for Anxiety Disordered Youth (READY; www.bravepracticeforkids.com). Implementation outcomes of interest included READY usage statistics, adoption, perceived utility, and clinician exposure use. Methods: Web analytics characterized usage patterns. A survey of READY users (N = 49; M age = 34.2, 82.9% female, 71% White) assessed adoption, perceived utility, clinician exposure use, and persistent barriers to exposure use. Results: In its first three years, READY had 13,543 page views across 1,731 unique users; 442 (25.6%) registered as a site user to access specialized content. Survey data suggested variability in usage and perceived utility across toolkit components. Qualitative analyses highlighted persistent exposure barriers that pointed to potential READY refinements. Conculsions: Overall, READY has been accessed by hundreds of clinicians, but its impact was limited by low return to the site. This study highlights strengths and limitations of standalone online implementation supports and identifies additional steps needed to optimally support clinicians to deliver exposure to youth in need.

17.
Toxics ; 11(4)2023 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-37112592

RESUMO

Plastic pollution in the oceans is a growing problem, with negative effects on exposed species and ecosystems. Xyrichtys novacula L. is a very important fish species both culturally and economically in the Balearic Islands. The aim of the present study was to detect and categorise the presence of microplastics (MPs) in the digestive tract of X. novacula, as well as the existence of oxidative stress in the liver. For this purpose, the fish were categorised into two groups based on the number of MPs observed in the digestive tracts: a group with no or low presence of MPs (0-3 items) and a group with a higher presence of MPs (4-28 items). MPs were found in 89% of the specimens analysed, with a dominance of fibre type and blue colour. Regarding the type of polymer, polycarbonate was the most abundant, followed by polypropylene and polyethylene. For the group with a greater presence of MPs, the activities of the antioxidant enzymes glutathione peroxidase and glutathione reductase, as well as the phase II detoxification enzyme glutathione s-transferase, were higher than the activities observed in fish with little to no presence of MPs. The activities of catalase and superoxide dismutase and the levels of malondialdehyde did not show significant differences between both groups. In conclusion, these results demonstrate the presence of MPs in the digestive tract of X. novacula and the existence of an antioxidant and detoxification response, mainly based on the glutathione-based enzymes.

18.
Biochim Biophys Acta Gen Subj ; 1867(1): 130249, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36183893

RESUMO

Chitinases are enzymes that degrade chitin, a polysaccharide found in the exoskeleton of insects, fungi, yeast, and internal structures of other vertebrates. Although chitinases isolated from bacteria, fungi and plants have been reported to have antifungal or insecticide activities, chitinases from insects with these activities have been seldomly reported. In this study, a leaf-cutting ant Atta sexdens DNA fragment containing 1623 base pairs was amplified and cloned into a vector to express the protein (AsChtII-C4B1) in Pichia pastoris. AsChtII-C4B1, which contains one catalytic domain and one carbohydrate-binding module (CBM), was secreted to the extracellular medium and purified by ammonium sulfate precipitation followed by nickel column chromatography. AsChtII-C4B1 showed maximum activity at pH 5.0 and 55 °C when tested against colloidal chitin substrate and maintained >60% of its maximal activity in different temperatures during 48 h. AsChtII-C4B1 decreased the survival of Spodoptera frugiperda larvae fed with an artificial diet that contained AsChtII-C4B1. Our results have indicated that AsChtII-C4B1 has a higher effect on larva-pupa than larva-larva molts. AsChtII-C4B1 activity targets more specifically the growth of filamentous fungus than yeast. This work describes, for the first time, the obtaining a recombinant chitinase from ants and the characterization of its insecticidal and antifungal activities.


Assuntos
Formigas , Quitinases , Animais , Antifúngicos/química , Formigas/enzimologia , Formigas/genética , Formigas/metabolismo , Quitina/química , Quitinases/química , Quitinases/genética , Quitinases/farmacologia , Clonagem Molecular , Fungos/metabolismo , Inseticidas/farmacologia , Larva/efeitos dos fármacos , Saccharomyces cerevisiae/efeitos dos fármacos , Spodoptera/efeitos dos fármacos , Catálise , Domínio Catalítico
19.
JAMA Pediatr ; 177(3): 231-239, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36622653

RESUMO

Importance: Early behavior problems in children with developmental delay (DD) are prevalent and impairing, but service barriers persist. Controlled studies examining telehealth approaches are limited, particularly for children with DD. Objective: To evaluate the efficacy of a telehealth parenting intervention for behavior problems in young children with DD. Design, Setting, and Participants: A randomized clinical trial was conducted from March 17, 2016, to December 15, 2020, in which children with DD and externalizing behavior problems were recruited from early intervention and randomly assigned to a telehealth parenting intervention or control group and evaluated through a 12-month follow-up. Most children were from ethnic or racial minoritized backgrounds. Over one-half of children were in extreme poverty or low income-need ratio categories. Interventions: Internet-delivered parent-child interaction therapy (iPCIT), which leverages videoconferencing to provide live coaching of home-based caregiver-child interactions. Families received 20 weeks of iPCIT (provided in English or in Spanish) or referrals as usual (RAU). Main Outcomes and Measures: Observational and caregiver-report measures of child and caregiver behaviors and caregiving stress were examined at preintervention, midtreatment, and postintervention and at 6- and 12-month follow-ups. Results: The sample included a total of 150 children (mean [SD] age, 36.2 [1.0] months; 111 male children [74%]) and their caregivers with 75 each randomly assigned to iPCIT or RAU groups. Children receiving iPCIT relative to RAU displayed significantly lower levels of externalizing problems (postintervention Cohen d = 0.48; 6-month Cohen d = 0.49; 12-month Cohen d = 0.50) and significantly higher levels of compliance to caregiver direction after treatment. Of those children with data at postintervention, greater clinically significant change was observed at postintervention for children in the iPCIT group (50 [74%]) than for those in the RAU group (30 [42%]), which was maintained at the 6-month but not the 12-month follow-up. iPCIT did not outperform RAU in reducing caregiving stress, but caregivers receiving iPCIT, relative to RAU, showed steeper increases in proportion of observed positive parenting skills (postintervention odds ratio [OR], 1.10; 95% CI, 0.53-2.21; 6-month OR, 1.31; 95% CI, 0.61-2.55; 12-month OR, 1.64; 95% CI, 0.70-3.07) and sharper decreases in proportion of observed controlling/critical behaviors (postintervention OR, 1.40; 95% CI, 0.61-1.52; 6-month OR, 1.72; 95% CI, 0.58-1.46; 12-month OR, 2.23; 95% CI, 0.53-1.37). After treatment, iPCIT caregivers also self-reported steeper decreases in harsh and inconsistent discipline than did than RAU caregivers (postintervention Cohen d = 0.24; 6-month Cohen d = 0.26; 12-month Cohen d = 0.27). Conclusions and Relevance: Results of this randomized clinical trial provide evidence that a telehealth-delivered parenting intervention with real-time therapist coaching led to significant and maintained improvements for young children with DD and their caregivers. Findings underscore the promise of telehealth formats for expanding scope and reach of care for underserved families. Trial Registration: ClinicalTrials.gov Identifier: NCT03260816.


Assuntos
Comportamento Problema , Telemedicina , Humanos , Masculino , Criança , Pré-Escolar , Adulto , Poder Familiar , Educação Infantil , Pais
20.
J Acquir Immune Defic Syndr ; 90(S1): S190-S196, 2022 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-35703771

RESUMO

BACKGROUND: Managed problem solving (MAPS) is an evidence-based intervention that can boost HIV medication adherence and increase viral suppression, but it is not widely used in community clinics. Deploying community health workers to deliver MAPS could facilitate broader implementation, in support of the Ending the HIV Epidemic (EHE) initiative's goal of reducing new HIV infections in the US by 90% by 2030. SETTING: Ryan White-funded clinics in Philadelphia, 1 of 48 US counties prioritized in the EHE. METHODS: Semistructured stakeholder interviews were conducted with 13 clinics and 4 stakeholder groups: prescribing clinicians, nonprescribing clinical team members (eg, medical case managers), clinic administrators, and policymakers. Interviews were based on the Consolidated Framework for Implementation Research and investigated perceived barriers to and facilitators of MAPS delivery by community health workers. Rapid qualitative analytic techniques were used to synthesize interview data and identify key categories along an implementation pathway. Core determinants (ie, barriers and facilitators) of MAPS implementation were grouped within each category. RESULTS: Stakeholders were receptive to CHW-delivered MAPS and offered critical information on potential implementation determinants including preferences for identification and referral of patients, and the importance of integration and communication within the care team. CONCLUSIONS: This study elucidates insights regarding barriers and facilitators to delivering an evidence-based behavioral intervention in clinics serving people with HIV (PWH) and extends a rapid qualitative approach to HIV care that rigorously incorporates stakeholder data into the development of implementation strategies. It also offers insights for national implementation efforts associated with EHE.


Assuntos
Epidemias , Infecções por HIV , Agentes Comunitários de Saúde , Infecções por HIV/tratamento farmacológico , Infecções por HIV/prevenção & controle , Humanos , Resolução de Problemas , Pesquisa Qualitativa
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